JPH10241880A - Fluorescent lamp device and luminaire - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a fluorescent lamp device with an in-rush current restricted, without decreasing the characteristics of the fluorescent lamp, by restricting high harmonic waves. SOLUTION: When power is charged in the lighting circuit 3 of a fluorescent lamp device, the voltage of a commercial AC power supply (e) is given full wave rectification by a full wave rectifier 61 and smoothed by an electrolytic capacitor C2. Preset voltage is applied between the drain and the source of a field effect transistor Q2 to charge a capacitor C3 for turning a trigger element Q3 on. Gate voltage is applied to the gate of the field effect transistor Q2. An inverter circuit 62 is started to alternately turn the field effect transistor Q1 and the field effect transistor Q2 on and off with a current transformer CT for oscillation. High frequency AC voltage is applied between filaments FL1, FL2 to start and light a fluorescent lamp FL. A series resistance R1 with a resistance value of 4.7Ωand the electrolytic capacitor C2 with a capacity of 22μF are used to restrict an in-rush current and a ripple current for restricting high harmonic waves.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a bulb-shaped fluorescent lamp device and a lighting fixture using the fluorescent lamp device.

[0002]

2. Description of the Related Art Conventionally, as a fluorescent lamp device of this type, a configuration described in, for example, Japanese Patent Application Laid-Open No. Hei 5-174996 is known. Japanese Patent Application Laid-Open No. Hei 5-174986 discloses a capacitor input type smoothing system having a series resistor for reducing inrush current and having an electrolytic capacitor. A discharge lamp lighting device for lighting a fluorescent lamp by reducing waves is described.

[0003]

However, if the capacity of the electrolytic capacitor is reduced, the inrush current can be reduced. However, if the capacity of the electrolytic capacitor is too small, ripple increases and the characteristics of the fluorescent lamp deteriorate. .

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and an object of the present invention is to provide a fluorescent lamp device and a lighting fixture in which inrush current is suppressed by suppressing harmonics without deteriorating the characteristics of the fluorescent lamp. And

[0005]

According to a first aspect of the present invention, there is provided a fluorescent lamp device comprising: a base having a base; a fluorescent lamp mounted on the base with an input power of 16 W or less; a rectifier for rectifying an AC voltage of an AC power supply; An electrolytic capacitor having a capacity of 22 μF or less for smoothing the voltage rectified by the rectifying means, a discharge lamp lighting means for lighting the fluorescent lamp with the voltage smoothed by the electrolytic capacitor, and a series connection between the AC power supply and the discharge lamp lighting means. And a lighting circuit having a series resistance of 4.7Ω or more inserted and attached to the base. When the input power is 16 W or less, 6
In a fluorescent lamp corresponding to 0 W, by setting the capacity of the electrolytic capacitor to 22 μF or less and the resistance value to 4.7 Ω or more, inrush current is reduced, and ripple is suppressed to prevent deterioration of characteristics.

According to a second aspect of the present invention, there is provided a fluorescent lamp device comprising: a base having a base; a fluorescent lamp attached to the base; a ballast choke connected in series to the fluorescent lamp; Half-bridge type inverter means having a pair of switching means for turning off and lighting a fluorescent lamp, a DC cut capacitor connected in series with a ballast choke to cut a DC to the fluorescent lamp, a voltage of the DC cut capacitor And a lighting circuit having a clamp means for clamping the light-emitting element and a lighting circuit attached to the base. Then, the configuration is simplified by using the output of the ballast choke, and the voltage is clamped by the clamp means, so that the load characteristic is such that a short-circuit current can be obtained, and the fluorescent lamp is stably turned on.

According to a third aspect of the present invention, there is provided the fluorescent lamp device according to the second aspect, wherein the clamping means is provided with a first diode connected in parallel to the DC cut capacitor; A second diode connected between both ends of the means for clamping the voltage with a simple configuration.

According to a fourth aspect of the present invention, there is provided the fluorescent lamp device according to any one of the first to third aspects.
The fluorescent lamp device according to any one of claims 1 to 3, wherein the fluorescent lamp device includes a globe attached to the base.

According to a fifth aspect of the present invention, there is provided a lighting apparatus including the fluorescent lamp device according to any one of the first to fourth aspects and an apparatus body using the fluorescent lamp apparatus. It has the same function as.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the fluorescent lamp device according to the present invention will be described below with reference to FIGS.

FIG. 2 is a cross-sectional view of the fluorescent lamp device, FIG. 3 is a plan view of the fluorescent lamp device case, FIG. 4 is a cross-sectional view of the fluorescent lamp device case, and FIG. FIG. 6 and FIG. 6 are perspective views of the fluorescent lamp device.

As shown in FIGS. 2 to 6, the fluorescent lamp device 1 includes a fluorescent lamp FL, a case 2 as a base, and a lighting circuit 3. The fluorescent lamp FL has a glass bulb 11, in which four bulb portions 12a to 12d are arranged in parallel at four corners of a substantially square shape, and two bulb portions 12a to 12d are arranged adjacent to each other in parallel. The connecting portions 13 are formed by bending the respective ends of the valve portions 12a, 12c and the valve portions 12b, 12d substantially in a U-shape.
A pipe-shaped connecting portion 14 is formed near the other end of each one of the valve portions 12c and 12d connected by. Therefore, 4
By the valve portions 12a to 12d and the connection portions 13 and 14,
One bent discharge path 15 is formed in the bulb 11 as a whole. This valve shape conforms to JIS-C7601-
The compact fluorescent lamp specified in 1989 has the same shape as the arc tube used for the lamp represented by FDL, and is formed by connecting two bulbs 11 bent in a U-shape. is there.

Further, valve portions located at both ends of the valve 11
Filaments FL1 and FL2 are sealed at the ends of 12a and 12b. These filaments FL1 and FL2 are implanted in a flare stem (not shown). In addition, valve 11
Inside, several milligrams of mercury and several Torr of argon gas are sealed.

Each of the four valve portions 12a to 12d has a tube outer diameter of 12.5 mm and a tube inner diameter of 10.5 mm. Also, if the length of the valve portions 12a to 12d is 75
mm and the length of the discharge path 15 is 310 mm.

The case 2 has a case body 21 and a cover body 22 connected to the case body 21. The case body 21 and the cover body 22 are formed in a substantially spherical shape.

The case body 21 is made of, for example, a heat-resistant synthetic resin such as PBT resin, and has a case part 23 which forms a part of the spherical shape of the case 2. An opening 24 to be fitted to the body 22 is formed,
A substantially disk-shaped lamp mounting portion 25 is formed on the other end side.

The lamp mounting portion 25 is formed with a first lamp mounting hole 26 into which ends of two bulb portions 12a and 12b located at both ends of the bulb 11 are inserted. The two valve parts 12c located in the middle part of 11,
A second lamp mounting hole 27 into which the end of 12d is inserted is formed, and a closing portion 28 is formed between the lamp mounting holes 26 and 27. Further, in each of the lamp mounting holes 26, 27, two bulb insertion portions 26a, 27a into which the respective bulb portions 12a to 12d are inserted are formed in parallel by two, and between the bulb insertion portions 26a, 27a adjacent in parallel. Blocking projections 29 are formed at the edges of the holes on both sides corresponding to the positions. These closing protruding portions 29 are provided with valve portions 12a, 12b inserted into valve inserting portions 26a, 27a.
Between the valve parts 12c and 12d.
The shape is appropriately formed according to the presence or absence of the connection portion 14 and the like.

On the other hand, an annular partition wall 30 is formed on the inside of the case body 21 so as to surround the lamp mounting holes 26 and 27, and between the adjacent bulb insertion portions 26a and 27a, that is, the bulb portion 12a. The rib 31 is formed at a position facing between the positions 12d and 12d.

The opening 24 of the case body 21 is formed with an annular projection 32 which fits inside the case part 23, and a plurality of locking claws 33 which are engaged with the inside of the case part 23. Are formed.

The cover body 22 is made of a heat-resistant synthetic resin such as PBT resin, and has a cover portion 35 which forms a part of the spherical shape of the case 2. A portion 36 is formed, and an opening 37 to be fitted into the case body 21 is formed on the other end side. The cylindrical portion 36 is provided with, for example, an E26-shaped base 38.

The lighting circuit 3 has a circuit component 41 mounted on one surface of a circuit board 42. The circuit board 42 is formed in a disk shape, is housed inside the case body 21 with the mounting surface of the circuit component 41 facing the side opposite to the fluorescent lamp FL, and is joined and mounted on the plurality of ribs 31. . A base 38 is electrically connected to the power input side of the lighting circuit 3, and a fluorescent lamp FL is connected to the high frequency output side of the lighting circuit 3.
The external lead wires (not shown) connected to the filaments FL1 and FL2 are electrically connected.

In order to assemble the fluorescent lamp device, the ends of the bulb portions 12a to 12d of the fluorescent lamp FL are inserted into the lamp mounting holes 26 and 27 of the case body 21, and the opening 24 of the case body 21 is closed. With the nozzle of the adhesive filling device (not shown) facing upward, each of the bulb portions 12a to 12d and the lamp mounting hole 2
As shown in FIG. 7, each of the bulb portions 12a to 12d is moved while making a full circle along the gap between the bulb portions 12 and 12 and the lamp mounting holes.
3.0 ± 0.5g to seal the gap between 26 and 27
Is filled with an adhesive 51 such as silicon. By drying the adhesive 51, the fluorescent lamp FL and the case body 21 are fixed. In this way, by filling the adhesive 51 such as silicon while rotating each of the valve portions 12a to 12d,
As compared with the conventional case in which the entire circumference of the valve portions 12a to 12d is simply circled as in the conventional case shown in FIG. 8, excess silicon is reduced, deformation such as sagging due to its own weight or pinholes is reduced, and the adhesive 51 can be filled, which improves the appearance and sealability.

Subsequently, the lighting circuit 3 and the cover 22 are assembled to the case 21 to which the fluorescent lamp FL is fixed, to complete the fluorescent lamp device.

A closing portion 28 is provided between the adjacent lamp mounting holes 26, 27 of the case body 21, and the lamp mounting holes 26, 27 are provided.
Since the gap between the end portions of the bulb portions 12a to 12d inserted into the plug 27 can be closed, the outflow of the adhesive 51 can be prevented.
FL can be supported reliably.

Further, the amount of the adhesive 51 to be filled can be reduced. This is for each valve section 12a-12d
A slight gap between the lamp mounting holes 26 and 27
, It is not necessary to apply much adhesive 51 to the central portion of the closed portion 28, etc.
Can be reduced.

Further, when the base 38 of the fluorescent lamp device is turned on upward, that is, when the base is turned on, the sealing performance by the adhesive 51 is improved, and the convective heat from the fluorescent lamp FL is transferred from the lamp mounting holes 26 and 27 to the case 2. It is possible to suppress the temperature rise in the case 2 without flowing into the inside.

Moreover, at the edge of each of the lamp mounting holes 26 and 27,
Since the two bulb portions 12a, 12b inserted into the respective lamp mounting holes 26, 27 and the closing projection 29 projecting between the bulb portions 12c, 12d are provided, the lamp mounting holes 26, 27 and the bulb portion 12a are provided.
To 12d can be further reduced, and the effect of reducing the amount of the adhesive 51 used can be further improved.

The lamp mounting hole 2 is provided inside the case body 21.
Since the partition wall 30 surrounding the casings 27 is formed, the place where the adhesive 51 is filled in the casing 21 can be restricted and the casing 21 can be filled.
Can be reinforced.

A plurality of ribs 31 protrude inside the case body 21, and the ribs 31 are adjacent to the valve portions 12a to 12d.
When the adhesive 51 is filled along the periphery of the valve portions 12a to 12d, the rib 31 is used to move the nozzle.
Can be easily filled without interference.

A circuit board on the opposite side of the fluorescent lamp FL
Since the lighting circuit 3 is mounted on the surface 42, the lighting circuit 3 can be separated from the fluorescent lamp FL to reduce the thermal influence from the fluorescent lamp FL. Moreover, since the ribs 31 for supporting the circuit board 42 are provided inside the case body 21, the position of the circuit board 42 in the case body 21 can be regulated.

Further, by sealing the lamp mounting holes 26 and 27 with the adhesive 51, a moisture-proof structure and a waterproof structure can be obtained, and the lamps can be used in bathrooms and outdoors. In addition, it is possible to prevent dust and pests from entering the case 2.

Further, in the lighting circuit 3, as shown in FIG. 1, a capacitor C1 forming a filter is connected to a commercial AC power supply e via a fuse F1, and an inductor L1 and a rush filter forming a filter are connected to the capacitor C1. The input terminal of a full-wave rectifier 61 as a rectifier is connected via a series resistor R1 having a resistance of 4.7 Ω or more for preventing a current, that is, a so-called inrush current. An output terminal of the full-wave rectifier 61 is connected to a capacitor input type electrolytic capacitor C2 having a capacity of 22 μF or less for smoothing. The electrolytic capacitor C2 is an instant start type half-bridge type as discharge lamp lighting means. The inverter circuit 62 is connected. It should be noted that if the resistance value of the series resistor R1 is too large, a loss at normal time occurs. The size of the electrolytic capacitor C2 is 12.5 mm or more in diameter and 20 mm or more in height. Further, the resistance value of the series resistor R1 is 4.7Ω or more, and the capacity of the electrolytic capacitor C2 is 22Ω.
If it is not more than μF, the inrush current can be suppressed, the ripple can be suppressed, and the harmonics can be reduced.

The inverter circuit 62 includes an electrolytic capacitor
A series circuit of a field effect transistor Q1 and a field effect transistor Q2, which are switching elements, is connected in parallel with C2. A series circuit of a resistor R2 and a capacitor C3 is connected in parallel with the electrolytic capacitor C2, and a connection point between the resistor R2 and the capacitor C3 is connected to the gate of the field effect transistor Q2 via a trigger element Q3. In addition, it is connected to a connection point between the field effect transistor Q1 and the field effect transistor Q2 via the diode D1 and the resistor R3. Further, a resistor R4 and a capacitor C4 are connected in parallel with the field-effect transistor Q1.
Are connected.

Further, the gate of the field effect transistor Q1,
Between the drains, the first control winding CTb of the current transformer CT
Connected between the gate and drain of the field effect transistor Q2, a capacitor C5, a resistor R5, and a Zener diode ZD.
1, ZD2 and the second control winding CTc of the current transformer CT are connected.

Further, the connection point of the field effect transistor Q1 and the field effect transistor Q2 is equivalent to 60 W of an incandescent lamp via the detection winding CTa of the current transformer CT, the ballast choke L2 and the capacitor C6 for DC cutoff. The filament FL1 of the fluorescent lamp FL having an input power of 16 W,
The starting capacitor C7 is connected between the filaments FL1 and FL2.

Next, the operation of the lighting circuit 3 of this embodiment will be described.

When power is supplied to the lighting circuit 3 of the fluorescent lamp device 1, the voltage of the commercial AC power supply e is full-wave rectified by the full-wave rectifier 61 and smoothed by the electrolytic capacitor C2. Then, the capacitor C3 is charged, the capacitor C3 is charged, a predetermined voltage is applied between the drain and the source of the field effect transistor Q2, and when the voltage of the capacitor C3 becomes equal to or higher than a predetermined value, the trigger element Q3 Is turned on, and a gate voltage is applied to the gate of the field effect transistor Q2, whereby the inverter circuit 42 starts operating and the current transformer
The field effect transistor Q1 and the field effect transistor Q2 are alternately turned on and off by the CT to oscillate, and the filaments FL1, FL1,
Without preheating the FL2, a high-frequency AC voltage is applied between the filaments FL1 and FL2, and a discharge is induced in the bulb 11 of the fluorescent lamp FL to start and turn on.

Here, the results of the inrush current and the harmonics with the comparative example using a resistance value of 1Ω for the series resistor R1 and a capacitance of 47 μF for the electrolytic capacitor C2 will be described.

First, in the above embodiment, as shown in FIG. 9, the ripple can be suppressed and the harmonics can be reduced by the electrolytic capacitor C2. As shown in 10, electrolytic capacitor
Ripple cannot be sufficiently suppressed by C2, and harmonics cannot be sufficiently reduced.

Regarding the harmonics, an experiment was conducted under the following measurement conditions: measurement standard: 100 V system impedance in Japan, setting voltage: 100.0 V, frequency: 50.00 Hz, impedance network: 0.4 Ω + 0.37 mH, and limit magnification: IEC 2.3000. Then, it becomes as follows.

In the case of the above embodiment, as shown in FIG. 11, the content of the harmonics is lower as a whole as compared with that of the comparative example shown in FIG. The values are as shown in Table 2. In the case of the embodiment, the total harmonic distortion is 113.79%, which is 16% of the comparative example.
The power factor is greatly improved as compared with 4.63%.

[0042]

[Table 1]

[Table 2] The input current waveform of the embodiment shown in FIG.
It almost fits in the EC convex frame, and has less harmonic components and is closer to a sine wave than the input current shown in FIG. 14 of the comparative example.

Further, the inrush current is also 10 A, which is reduced to 1/3 of 30 A of the comparative example.

FIG. 15 is a perspective view showing a downlight which is a lighting device using a fluorescent lamp device. The downlight-type lighting device includes a cylindrical device body 71 which opens downward, and the device body. The fluorescent lamp device is inserted and arranged inside 71. An Edison-type socket (not shown) to which the base 38 of the fluorescent lamp device is screwed and connected is provided at an upper inside portion of the fixture body 71.

Next, another embodiment will be described with reference to FIG.

FIG. 16 is a circuit diagram showing a lighting circuit according to another embodiment. The embodiment shown in FIG. 16 differs from the embodiment shown in FIG. Of the ballast choke L2 and the capacitor by the lead wires 82 and 83.
It is connected between C6 and the low potential side which is the stable potential side to reduce the starting voltage. The proximity conductor 81 is formed of conductive silicon resin so that it can be easily attached to the bulb 11. The linear distance of the discharge path is farthest from the filaments FL1 and FL2, and is closest to the substrate 41. Form in position. The conductivity may be further increased by mixing metal powder into the conductive silicon resin. Also, by embedding the lead wires 82 and 83 in the conductive silicon, the lead wires 82 and 83 also have a function as a proximity conductor, so that the conventional soldering becomes unnecessary and the mounting becomes easy.

By forming the proximity conductor 81 as described above, the starting voltage is reduced by about 10 V as the input voltage. Therefore, the brightness of about 100 W of incandescent lamp
In the case of the 3W type, although the discharge path becomes longer and the discharge starting voltage becomes higher, the discharge becomes easier and more effective.

FIGS. 17 and 1 show another embodiment.
8 will be described.

FIGS. 17 and 18 are circuit diagrams showing lighting circuits according to other embodiments. The embodiment shown in FIG. 17 differs from the embodiment shown in FIG.
1b is short-circuited, and a capacitor C8 is connected between the filaments FL1a. The embodiment shown in FIG.
In the embodiment shown in FIG. 19, the filaments FL1a are short-circuited, and the capacitor C8 is connected between the filaments FL1b. Thus, the starting voltage can be reduced as in the embodiment shown in FIG.

Another embodiment will be described with reference to FIG.

FIG. 19 is a circuit diagram showing a lighting circuit according to another embodiment. In the embodiment shown in FIG. 19, the current transformer CT is eliminated from the embodiment shown in FIG. Connect a resistor R8 between the gate and source, and connect a resistor R6 and diode D2 in parallel with this resistor R8.
And a series circuit of a secondary winding L2a magnetically coupled with a ballast choke L2 and an anti-parallel circuit of a diode D3, and in parallel with a capacitor C5, an anti-parallel circuit of a resistor R5, a diode D4 and a diode D5. And a series circuit of a secondary winding L2b magnetically coupled to the ballast choke L2. In addition, the DC cut capacitor C6 is positioned on the stable potential side, and a clamp circuit 91 is disposed as a clamp means for clamping a voltage to the capacitor C6, and the clamp circuit 91 is connected in parallel to the capacitor C6. And a diode D7 connected to both ends of the connected diode D6 and the field effect transistor Q1 and the field effect transistor Q2. The voltage across the capacitor C6 is clamped, a short circuit current is taken, and the load characteristics are stabilized.

By eliminating the current transformer CT, the cost can be significantly reduced.

If the feedback current is simply taken from the ballast choke L2, the short-circuit current cannot be obtained and the load current may increase, resulting in unstable load characteristics. Since the short-circuit current is obtained by clamping the voltage across C6, the load characteristics are stable and there is no problem.

According to the experiment, as shown in FIG. 20, when the clamp circuit 91 is provided, both the voltage characteristic Va and the power characteristic Wa are stable against the load fluctuation during the stable lighting, and the current transformer There is no problem as in the case of having the CT, but in the case of the comparative example in which the clamp circuit 91 is not provided, since neither the voltage characteristic Vb nor the power characteristic Wb can obtain a short-circuit current, the operation may be unstable. is there.

Further, another embodiment will be described with reference to FIG.

FIG. 21 is a circuit diagram showing a lighting circuit according to another embodiment. The embodiment shown in FIG. 21 is different from the embodiment shown in FIG. 19 in that the fluorescent lamp FL is arranged on the field effect transistor Q1 side. And the capacitor C6 is positioned on the high potential side. Even with such a configuration, the same effect as in the case of the configuration shown in FIG. 19 can be obtained.

[0057]

According to the first aspect of the present invention, a fluorescent lamp corresponding to 60 W of an incandescent lamp with an input power of 16 W or less, the capacity of the electrolytic capacitor is set to 22 μF or less, and the resistance value is set to 4.7 Ω or more. By doing so, it is possible to reduce inrush current, suppress ripples, reduce harmonics, and prevent deterioration of characteristics.

According to the fluorescent lamp device of the second aspect,
The use of a ballast choke output eliminates the need for a current transformer and simplifies the configuration, and clamps the voltage by means of a clamp to provide a load characteristic that allows short-circuit current to be obtained, stabilizing the fluorescent lamp without a current transformer. Can be lit.

According to the fluorescent lamp device of the third aspect,
3. The fluorescent lamp device according to claim 2, wherein the clamp means includes a first diode connected in parallel to the DC cut capacitor; and a second diode connected between both ends of the paired switching means. And so
Voltage can be clamped with a simple configuration.

According to the fluorescent lamp device of the fourth aspect,
In addition to the fluorescent lamp device according to any one of claims 1 to 3, further comprising a globe attached to the base,
It can also be used with gloves.

According to the luminaire of the fifth aspect, since the fluorescent lamp device of any one of the first to fourth aspects is used for the main body of the luminaire, the respective effects can be obtained.

[Brief description of the drawings]

FIG. 1 is a circuit diagram showing a lighting circuit of a fluorescent lamp device according to an embodiment of the present invention.

FIG. 2 is a sectional view showing the fluorescent lamp device according to the first embodiment;

FIG. 3 is a plan view of the case body.

FIG. 4 is a sectional view of the same case body.

FIG. 5 is a bottom view of the same case body.

FIG. 6 is a perspective view of the fluorescent lamp device.

FIG. 7 is an explanatory view showing application of the adhesive.

FIG. 8 is an explanatory view showing the application of an adhesive according to the comparative example.

FIG. 9 is a waveform chart showing a voltage and a current of the electrolytic capacitor C2.

FIG. 10 is a waveform chart showing a voltage and a current of an electrolytic capacitor C2 of the comparative example.

FIG. 11 is a graph showing harmonics of each order.

FIG. 12 is a graph showing harmonics for each order of the comparative example.

FIG. 13 is a waveform chart showing an input voltage and an input current according to the first embodiment;

FIG. 14 is a waveform chart showing an input voltage and an input current of the comparative example.

FIG. 15 is a perspective view showing the lighting device.

FIG. 16 is a circuit diagram showing a lighting circuit according to another embodiment of the present invention;

FIG. 17 is a circuit diagram showing a lighting circuit according to another embodiment of the present invention;

FIG. 18 is a circuit diagram showing a lighting circuit according to another embodiment of the present invention.

FIG. 19 is a circuit diagram showing a lighting circuit according to another embodiment of the present invention.

FIG. 20 is a graph showing a voltage and a power of the load characteristic according to the first embodiment;

FIG. 21 is a circuit diagram showing a lighting circuit according to another embodiment of the present invention;

[Explanation of symbols]

 2 Case constituting base 3 Lighting circuit 38 Base 61 Full-wave rectifier as rectifying means 62 Inverter circuit as discharge lamp lighting means 71 Instrument body 91 Clamp circuit as clamping means C2 Electrolytic capacitor FL Fluorescent lamp R1 Series resistance

Claims (5)

[Claims] 1. A base having a base; a fluorescent lamp mounted on the base with an input power of 16 W or less; a rectifier for rectifying an AC voltage of an AC power supply; and a capacitor having a capacity of 22 μF or less for smoothing the voltage rectified by the rectifier. An electrolytic capacitor, discharge lamp lighting means for lighting the fluorescent lamp with the voltage smoothed by the electrolytic capacitor, and a series resistor having a resistance of 4.7Ω or more inserted in series between the AC power supply and the discharge lamp lighting means. And a lighting circuit attached to the base. 2. A base having a base; a fluorescent lamp attached to the base; a ballast choke connected in series to the fluorescent lamp; and a pair of switching means for turning on and off alternately according to the magnetic output of the ballast choke. Having a half-bridge type inverter means for lighting a fluorescent lamp, a DC cut capacitor connected in series with a ballast choke to cut a DC to the fluorescent lamp, and a clamp means for clamping a voltage of the DC cut capacitor. And a lighting circuit attached to the base. 3. A first clamping means connected in parallel to a DC cut capacitor.
3. The fluorescent lamp device according to claim 2, further comprising: a diode; and a second diode connected between both ends of the pair of switching means. 4. The fluorescent lamp device according to claim 1, further comprising a globe attached to the base. 5. A lighting device comprising: the fluorescent lamp device according to claim 1; and a device main body using the fluorescent lamp device.